New submission from hongweipeng <hongweichen8...@sina.com>:
```
from functools import cached_property
def age(self):
return 10
class A:
def __init__(self):
setattr(self.__class__, 'age', property(age))
setattr(self.__class__, 'age3', cached_property(age))
age2 = cached_property(age)
a = A()
print(a.age) # 10
print(a.age2) # 10
print(a.age3) # TypeError: Cannot use cached_property instance without
calling __set_name__
```
Is it expected?
----------
messages: 354929
nosy: hongweipeng
priority: normal
severity: normal
status: open
title: functools.cached_property is not supported for setattr
versions: Python 3.8
_______________________________________
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue38524>
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